A time-tested technology, trickling filters offer a simple, cost-effective, energy-efficient treatment solution. With more than 500 trickling filter installations worldwide, Brentwood’s media and components have been optimized to guarantee the best performance for any application. By maximizing surface area in a given volume, Brentwood’s structured-sheet media provides an ideal environment for microorganism growth.

Brentwood media is rigorously tested for compression strength to ensure the structural integrity required for deep towers and demanding applications. Our dedication to quality and media performance is clear throughout Brentwood’s history with many installations in operation for over 20 years.

By combining high surface area with a maximum number of mixing points per unit volume of media, cross flow media facilitates superior process performance across a wide range of hydraulic wetting rates. The cross-corrugated modules provide continuous and uniform horizontal distribution of both air and water throughout the full media depth.

Media is also available in vertical flow configurations, which can be combined with cross flow media for superior solids flushing. Vertical flow media allows a thinner biofilm to be retained and minimizes biomass accumulation.

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Bissell Point, the largest wastewater treatment facility in Missouri, expanded their facility in the mid-1980s to provide secondary treatment. The goal of the upgrade was to select a reliable process that would achieve high-rate BOD removal. They opted for trickling filter technology and worked with Brentwood to install roughly 3 million cubic feet of plastic media in 6 towers. Nearly 25 years post-installation, Brentwood’s media is still in operation and consistently meets NPDES discharge limits.

ApplicationThe South Monmouth Regional Sewerage Authority (SMRSA) sought to replace its rock media with plastic media in 2001. They studied many pilot tests and opted to work with Brentwood based on media strength, its inherent superiority in performance, and Brentwood’s manufacturing quality and capacity. The two retrofitted trickling filters with medium-density cross flow plastic media more than doubled the original treatment capacity of the plant’s secondary treatment process.

Nitrogen and phosphorus are nutrients in a wastewater treatment system. A Biological Nutrient Removal (BNR) process removes either portions of the influent total nitrogen through denitrification or portions of the influent phosphorus through anaerobic selection or both. In a BNR process, ammonia is ultimately converted to nitrogen gas, not just nitrate or nitrite.
If you have requirements for phosphorous removal and denitrification, trickling filters alone will not remove phosphorous, however, they can be...

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